Group the words into three groups: существительные, глаголы, прилагательные leave meet exercise book famous poor join song important count learn subject spend floor picture easy different museum comfortable laugh uniform study window rubber carpet

I ( n ) 
Exercise book, song, count, subject, floor, picture,museum, uniform, window, rubber, carpet
II ( v ) leave, meet, join, learn, spend, laught, study
III ( agi ) important,easy, different, comfortable.